# HVAC Pipe Sizer - Liquid — Pipe size calcs for liquids

> HVAC pipe sizing calculator for liquid systems with detailed property analysis. (iPhone/iPad app by Carmel Software Corporation.)

- Source: https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065 (this page in markdown: same URL + `.md`)
- Developer: [Carmel Software Corporation](https://appshunter.io/developer/317970398)
- Category: Productivity, Business
- Price: $4.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 16 MB
- Languages: American English
- Released: 2009-08-05
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065/reviews.md

## What is HVAC Pipe Sizer?

The "HVAC Pipe Sizer - Liquid" application allows you to quickly size a simple pipe system by inputting a number of piping and liquid properties, including hot and chilled water (hydronic).

This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly.

This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539
 
You can specify the total fluid flow in GPM (or L/s) and one of either unit head loss (ft/100ft), pipe internal diameter (inches) or fluid velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total head loss. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either unit head loss or fluid velocity parameters to derive the calculated fluid flow and other remaining properties.

You can specify additional parameters such as the type of liquid, various properties of the liquid, the pipe material type, the total length of pipe, quantities for up to 11 different types of pipe fittings, and much more. You can also choose to display values in either english or metric units.

This application includes built-in pipe fitting equivalent length and nominal pipe sizing tables for a wide variety of pipe material types and diameters.

This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. You can also manually input exact values.

The app allows you to email inputs and results once you have completed an analysis.

This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 

We also offer the following additional applications for the iPhone/iPad:

1. HVAC Duct Sizer
2. HVAC Pipe Sizer – Gas Low Pressure
3. HVAC Pipe Sizer - Gas High Pressure
4. HVAC Pipe Sizer – Liquid
5. HVAC Pipe Sizer – Steam
6. Steam Tables
7. Psychrometric Plus
8. Psychrometric LT
9. HVAC Pipe Sizer Plus
10. HVAC Pipe Sizer Gas Plus
11. HVAC Toolkit
12. HVAC Toolkit Ultimate
13. HVAC Residential Load Calcs
14. HVAC Load Plus
15. HVAC Equipment Locator
16. ASHRAE Duct Fitting Database
17. ASHRAE 62.1 Ventilation Load Calcs
18. HVAC Psych HD
19. HVAC ResLoad-J
20. HVAC Residential Load Calcs HD

## Key features

- Liquid pipe sizing
- Hydronic system calculations
- Input flow, head loss, diameter, or velocity
- Calculate fluid flow and head loss
- Supports various liquids and pipe materials
- English and metric unit options
- Email results

## Pricing and in-app purchases

Base price: $4.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065/reviews.md

### 4/5 — Great pressure loss app

*2014-09-04*

With a bit of fiddling, can get some pretty accurate pressure loss calls.
Would love to see an app were you draw out a piping scheme with your finger and put in pipe lengths and typical piping types like grooved connections or welded etc. similar to TACO's desktop software.

### 4/5 — Pretty good piping program

*2011-03-22*

I have been amazed to find this program on the iPhone. While it's not a full blown piping program it never the less gives accurate results for the times I've used it. Just input the basic info such as pipe diameter number and types of fittings, fluid type and it will tell you flow. Or you can use it to find diameter required for a flow. The only issues I have with it are: pressure drop  is always given in ft instead of psi. Also it would be really nice if it had a table of pipe sizes to aid data entry. Give me these simple changes and I'll give you 5 stars.

### 5/5 — Useful

*2009-12-29*

Nice little app for the office when I don't feel like booting up my laptop. I wish there were more nominal pipe sizes in the database though. Maybe the next version?

### 1/5 — Big bugssss

*2009-12-23*

If you set the max limit and increment for data in the pipe inputs window and you come back in the user input windows, the slider control bars indicate different limits.
I'm not able to reset the limits values and the conclusion!!! I can not use this tool. I'm comfused !!

### 5/5 — I like the update.

*2009-11-11*

The update looks good. I like the ability to increment values by a certain amount as you move the slider control.

### 5/5 — Great app.

*2009-10-21*

I like the simple interface for designing hydronic systems. The calcs appear very accurate after doing some comparisons with my engineering books.

### 1/5 — Wrong calcs!!!

*2009-09-22*

I don't need this app, I bought it to see how actually they built this hvac app, and I have to say it's poor work. This souls be very simple calcs and formulas. I tested the app with copper L pipe, fixed pipe diameter,  flow and length, and keep changing fittings which should change the total head loss. Surprise!!!! It's doesn't. 
So they got the internal formulas or functions wrong. I will not trust this app calcs to size any system. For people who actually worked on this. Please pay some more attention when you build and sell apps. It's just not about releasing an app, it's something people will pay for and expect to get some trusted result.

## Frequently asked questions about HVAC Pipe Sizer

### What is HVAC Pipe Sizer - Liquid used for?

HVAC Pipe Sizer - Liquid is used to quickly size simple pipe systems for liquids, including hot and chilled water (hydronic). It helps determine pipe diameters, fluid velocity, and head loss based on input parameters like flow rate and head loss.

### What types of liquids can HVAC Pipe Sizer - Liquid handle?

The application allows you to specify the type of liquid and its various properties. It is designed for hot and chilled water (hydronic) systems but can accommodate other liquid types based on user input.

### Can I use HVAC Pipe Sizer - Liquid on both iPhone and iPad?

Yes, HVAC Pipe Sizer - Liquid is a universal app that works on both iPhone and iPad, adjusting its screen size accordingly for an optimal user experience on each device.

### Does HVAC Pipe Sizer - Liquid support different units of measurement?

Yes, you can choose to display values in either English or metric units, providing flexibility for users working in different regions or with different standards.

### How does HVAC Pipe Sizer - Liquid handle pipe fittings?

The application includes built-in pipe fitting equivalent length tables for a wide variety of pipe material types and diameters. It allows for quantities of up to 11 different types of pipe fittings to be specified.

### Can I export my calculations from HVAC Pipe Sizer - Liquid?

Yes, the app allows you to email your inputs and results once you have completed an analysis. This feature helps in documenting and sharing your pipe sizing calculations.

### How often is HVAC Pipe Sizer - Liquid updated?

The latest version of HVAC Pipe Sizer - Liquid is 5.0, and it was last updated on November 28, 2025. This indicates a recent update, suggesting ongoing support and potential improvements.

### What is the price of HVAC Pipe Sizer - Liquid?

HVAC Pipe Sizer - Liquid is a paid application priced at $4.99. There are no mentions of subscriptions or free trials, indicating a one-time purchase for the app.

## Version history (last 5 releases)

### 5.0 — 2025-11-28

1. Added a Share button to the iPad version so users can email, text, and share reports.
2. Updated help.

### 4.95 — 2025-04-17

1. Optimized for iOS 18.
2. Updated help.

### 4.5 — 2023-03-01

1. Optimized for iOS 16 and iPhone 14
2. Updated help

### 4.1 — 2021-11-12

1. Optimized for iOS 15 and iPhone 13
2. Updated help

### 3.8 — 2020-08-04

1. Updated the app launch screen per new Apple iOS guidelines.
2. Updated Google Analytics and Crashlytics

## Apps similar to HVAC Pipe Sizer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [HydroCalc Plus](https://appshunter.io/ios/app/hydrocalc-plus/id578807688) | 5.0 (1) | $3.99 | Productivity |
| [Pipe Sizer - Water](https://appshunter.io/ios/app/pipe-sizer-water/id1316033381) | 4.8 (10) | $12.99 | Productivity |
| [Plumbing Formulator](https://appshunter.io/ios/app/plumbing-formulator/id303497783) | 4.6 (7) | Free | Productivity |
| [Piping Fabrication App](https://appshunter.io/ios/app/piping-fabrication-app/id6504390642) | — | $9.99 | Productivity |
| [CalcEngineer](https://appshunter.io/ios/app/calcengineer/id6748969344) | 5.0 (2) | Free | Productivity |
| [Injection Molding Hub](https://appshunter.io/ios/app/injection-molding-hub/id6743525270) | — | Free | Productivity |

## More apps by Carmel Software Corporation

- [HVAC Duct Sizer](https://appshunter.io/ios/app/hvac-duct-sizer/id317970395)
- [HVAC Pipe Sizer - Steam](https://appshunter.io/ios/app/hvac-pipe-sizer-steam/id336112747)
- [Steam Tables](https://appshunter.io/ios/app/steam-tables/id339948012)
- [HVAC Pipe Sizer - Gas Low](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-low/id341688321)
- [HVAC Pipe Sizer - Gas High](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523)

All apps by Carmel Software Corporation: https://appshunter.io/developer/317970398

## Related topics

[pipe sizing calc hvac](https://appshunter.io/ios/topics/pipe-sizing-calc-hvac)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*